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      1 /*	$NetBSD: __vfork14.S,v 1.1 2014/09/03 19:34:26 matt Exp $	*/
      2 
      3 /*
      4  * pid = vfork();
      5  *
      6  * r12 == 0 in parent process, 1 in child process.
      7  * r11 == pid of child in parent, pid of parent in child.
      8  */
      9 
     10 #include "SYS.h"
     11 
     12 SYSCALL(__vfork14)
     13 	l.addi	r12,r12,-1	# from 1 to 0 in child, 0 to -1 in parent
     14 	l.and	r11,r11,r12	# return 0 in child, pid in parent
     15 	l.jr	lr
     16 	l.nop
     17 END(__vfork14)
     18